题目

下列各组物质，能在pH= 1的溶液中大量共存，且形成无色溶液的是   （   ）A．NaNO3HCI Na2SO4B．NaNO3 NaCI CuSO4C．NaCI Na2SO4Na2CO3D．NaOH BaCI2 Na2SO4 答案：：C解析:略Kate said "Hello" to Mr. Patel as she entered. She picked a basket and walked towards the back of the store  26  the rice was kept. The room was quite large and divided by three long aisles (过道), with rows of shelves full of  27 . Besides her and Patel there were only two boys in the store. They were both wearing   28   overcoats. They looked rather   29 because the overcoats were too long for them. "  30  ", she heard one of them spoke in a low voice to  31  . She walked on to the next aisle and found the 32  she was looking for. Then she heard something else. It  33  like a box dropping on the floor. She looked through the small space  34  goods on the shelf and saw one of the boys picking up a box. But   35  putting it in the basket, he dropped 36  into the inside pocket of his overcoat. Kate looked back and   37  see Mr. Patel at the door checking through a list. Then she looked through the  38  in the shelf again. The boys still had their backs to her. They were putting something  39  into their inside pockets and then one of them said, "Let's get out of here. " They moved away from her. When she got to the door the two boys were  40  her. She watched them   41  for the few things in their   42 . They had both  43  their over coats. Mr. Patel did not seem to know what they had done. He even   44  at them as they were about to  45  . Now, Kate decided to stop them.小题1:A．which B．that C．here D．where小题2:A．books B．baskets C．goods D．magazines小题3:A．dirty B．long C．gray D．tight小题4:A．strange B．young C．nervous D．excited小题5:A．look up B．listen to meC．Watch out D．Put it down小题6:A．him B．her C．the boy D．the other小题7:A．book B．rice C．bag D．magazine小题8:A．looked B．heard C．showed D．sounded小题9:A．between B．of C．around D．at小题10:A．instead ofB．before C．without D．as if小题11:A．something B．it C．that D．one小题12:A．would B．should C．might D．could小题13:A．spot B．space C．goods D．books小题14:A．importantB．new C．else D．extra小题15:A．looking at B．talking to C．in front of D．behind小题16:A．paying B．looking C．asking D．reaching小题17:A．hands B．pockets C．box D．basket小题18:A．throw outB．put on C．buttoned D．hidden小题19:A．shouted B．smiled C．looked D．laughed小题20:A．leave B．pay C．speak D．apologize